NC0021156_Permit (Issuance)_19960722

NPDES DOCUWENT SCANNING COVER SHEET
NPDES Permit: NC0021156
Mount Holly WWTP
Document Type: ermit Issuanc ;
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Engineering Alternatives Analysis
201 Facilities Plan
Instream Assessment (67B)
Speculative Limits
Permit
History
Document Date: July 22, 1996
This document is printed ou reuse paper-igriore any
co=ateat on the reverse side

State of North Carolina
Department of Environment, AV
Health and Natural Resources
Division of Water Quality !/
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary ID E H N F1
A. Preston Howard, Jr., P.E., Director
July 22,1996
Mr. W.E. Nichols
City of Mount Holly
P.O. Box 406
Mount Holly,North Carolina 28120
Subject: NPDES Permit Issuance
Permit No.NCO021156
Mount Holly WWTP
Gaston County
Dear Mr. Nichols:
In accordance with the application for a discharge permit received on January 31, 1996, the Division is
forwarding herewith the subject NPDES permit. This permit is issued pursuant to the requirements of North
Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the US
Environmental Protection Agency dated December 6, 1983.
If any parts,measurement frequencies or sampling requirements contained in this permit are unacceptable
to you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following
receipt of this letter. This request must be in the form of a written petition, conforming to Chapter 150B of the
North Carolina General Statutes, and filed with the Office of Administrative Hearings, Post Office Drawer
27447, Raleigh, North Carolina 27611-7447. Unless such demand is made, this decision shall be final and
binding.
Please take notice this permit is not transferable. Part II, EA. addresses the requirements to be followed
in case of change in ownership or control of this discharge.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Environmental Management or permits required by the Division of Land Resources, Coastal Area
Management Act or any other Federal or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Susan Wilson at telephone number(919)
733-5083,extension 555.
Sincerely,
uriginal Signed By
David A. Goodrich
A.Preston Howard,Jr.,P.E.
cc Central Files
Mooresville Regional Office
Mr. Roosevelt Childress, EPA
(Peimits and Engineering Unit)
Facility Assessment Unit
Aquatic Survey& Toxicology Unit
P.O.Box 29535, Raleigh, North Carolina 27626-0535 Telephone[phone] FAX[phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10%post-consumer paper

Permit No. NCO021156
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Mangement Commission,
and the Federal Water Pollution Control Act, as amended,
City of Mount Holly
is hereby authorized to discharge wastewater from a facility located at
Mount Holly Wastewater Treatment Plant
Broome Street
Mount Holly
Gaston County
to receiving waters designated as the Catawba River in the Catawba River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
II, III, and IV hereof.
The permit shall become effective September 1, 1996.
This permit and the authorization to discharge shall expire at midnight on July 31, 2001.
Signed this day July 22, 1996.
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Mangement Commission

Permit No. NC0021156
SUPPLEMENT TO PERMIT COVER SHEET
City of Mount Holly
is hereby authorized to:
1. Continue to operate an existing 4.0 MGD wastewater treatment facility consisting of bar screen,
grit chambers, instrumental flow measurement, flow equalization basin, aeration basins with
mechanical aeration, secondary clarifiers,dual chlorine contact chamber, aerated sludge holding
tanks, sludge holding tanks, and (unused) sand drying beds located at Mount Holly Wastewater
Treatment Plant,Broome Street, Mount Holly, Gaston County (See Part III of this Permit),
and
2 Discharge from said treatment works at the location specified on the attached map into Catawba
River which is classified Class WS-IV CA waters in the Catawba River Basin.

49
� _ �• i,i� � ?�iyB,�`���
' •,� 'fit--i �� _ .T , �� - >•_ t " ; ram., -
<
V I•wM CRLLK•N/. Y {INpUN rIIN
O
DISCHARGE POINT
MOUNT HOLLY WASTEWATER TREATMENT PLANT
NCO021156
CATAWBA RIVER
350 15' 55"
810 00' 21"

A. ( ). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NCO021156
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the pennittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Measurement Sample 'Sample
Monthly Avg, Weekly Avg. Daily Max Frequency Tvpe Location
_Flow 4:0 MGD Continuous Recording I or E
SOD. 5 day, 20°C" 30.0 mg/I 45.0 mg/I 3/Week Composite E,I
Total Suspended Residue" 30.0 mg/I 45.0 mg/I 3/Week Composite E,
NH3 as N 3/Week Composite E
Dissolved Oxygen 3/Week ' Grab E, U, D
Fecal Coliform (geometric mean) 200.0 100 ml 40q�.@/100 ml 3/Week ' Grab E, U, D
OcsrsBGctivtty��-- '9� 3/Week ' Grab E
Temperature QA- Daily ' Grab E,U,D
Phenols CQT 11DO4 Weekly Grab E
Phenol t 2/Month Grab E
Chronic Toxicity"' Quarterly Composite E
* Sample locations: E- Effluent, I - Influent, U - Upstream at Hwy 27 Bridge, D- Downstream just below US Hwy 29/74 bridge.
Upstream and downstream samples shall be grab samples. Stream samples shall be collected three times per week during June, July, August,
and September and once per week during the remaining months of the year.
04T1
monthly.average effluent BOD5 and Total Suspended Residue concentrations shall not exc f the respective influl-nt value
emoval)ronic Toxicity (Ceriodaphnia) P/F at 6.0%; February, May, August, and November; See Part III, Condition G.
t The phenols limit is based on chlorinated phenols only (See Part III, Special Condition 11). The phenol monitoring requirement is based on
the singular phenol compound.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored 3/week at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
CONTINUED. . . .

A. O. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0021156_
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number OOL (Continued)
Effluent Characteristics Discharge Limitations Monitoring Requirements
Units (specify) Measurement
— SampleLSamoi
Monthly Avg. Weekly Avg Daily Max Ere uency 1
1-pe e
Location
Total Residual Chlorine 3/Week Grab E
Total Nitrogen (NO2+NO3+TKN) Monthly Composite E
Total Phosphorus Monthly Composite E
Copper 2/Month Composite E
Zinc 2/Month Composite E

Part III NPDES No. NC0021156
G. Chronic Toxicity Pass/Fail Permit Limit (Quarterly)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures
outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina
Chronic Bioassay Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction
or significant mortality is 6.0% (defined as treatment two in the North Carolina procedure
document). The permit holder shall perform quarterly monitoring using this procedure to
establish compliance with the permit condition. The first test will be performed after thirty
days from the effective date of this permit during the months of February, May, August,
and November. Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the
Effluent Discharge Monitoring Form (MR-1) for the month in which it was performed,
using the parameter code TGP3B. Additionally, DEM Form AT-1 (original) is to be sent to
the following address:
Attention:
Environmental Sciences Branch_
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical
measurements performed in association with the toxicity tests, as well as all dose/response
data. Total residual chlorine of the effluent toxicity sample must be measured and reported
if chlorine is employed for disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then
monthly monitoring will begin immediately until such time that a single test is passed.
Upon passing, this monthly test requirement will revert to quarterly in the months specified
above.
Should any test data from this monitoring requirement or tests performed by the North
Carolina Division of Environmental Management indicate potential impacts to the receiving
stream, this permit may be re-opened and modified to include alternate monitoring
requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as
minimum control organism survival and appropriate environmental controls, shall
constitute an invalid test and will require immediate retesting(within 30 days of initial
monitoring event). Failure to submit suitable test results will constitute noncompliance
with monitoring requirements.

Part III NPDES No. NCO021156
H. Chlorinated Phenolic Compounds.
The limit for chlorinated phenolic compounds shall include a total concentration of the
following:
3-chlorophenol
4-chlorophenol
2,3-dichlorophenol
2,5-dichlorophenol
2,6-dichlorophenol
3,4-dichlorophenol
2,4,5-trichlorophenol
2,4,6-trichlorophenol
2,3,4,6-tetrachlorophenol
2-methyl-4-chlorophenol
3-methyl-4-chlorophenol
3-methyl-6-cHorophenol

NPDES WASTE LOAD ALLOCATION
PERMIT NO.:
NC0021156 Modeler Date Rec. I #
SN.n� Z5U -
PERMITTEE NAME: City of Mount Holly
z
FACILITY NAME: Mount Holly Wastewater Treatment Plant Drainage Area (mi ) ,2olS- Avg. Streamflow (cfs):
Min;/.& Wer./w 0?00)
Facility Status: Existing 7Q10 (cfs) 9S Winter 7Q10 (cfs) 30Q2 (cfs) 7/ c +"
Permit Status: Renewal with Modification Toxicity Limits: IWC % Ac e/Chronic
Major Minor Instream Monitoring:
Pipe No.: 001 Parameters c.
Design Capacity: 4.000 MGD Upstream Y Location 07
Domestic (% of Flow): 30 % Downstream Y Location .29 ,7f' &,a£
Industrial (% of Flow): 70 %
Effluent Summer--
Comments: Characteristics �_ Winter
Facility wishes to expand to 4.5 MGD with rerating of plant(no BOD5 (m ) 3(0,
construction/no public monies/no EA) LTeAp NH N ( �m 1 ,
) �n
-CAS' f4Nr cur C017U,AiJcc AT ills il,^.C- 3 -
STREAM INDEX: I I-(1171 7ov
D.O. (mg/1)
RECEIVING STREAM:Catawba River
�S
Class: WS-IV CA TSS (mg/1) 30 J 's
Sub-Basin: 03-08-33 F. Col. (/100 ml) Zoo
Reference USGS Quad: F14SE, Belmont (please attach) pH (SU)
County: Gaston (� -9
Regional Office: Mooresville Regional Office (� 0 I7 ( / ✓%Naffs 1
K \ HNC 7l l weld I
Previous Exp. Date: 7/31/96 Treatment Plant Class ,Q.•-� �-
Classification changes within three miles:
Ca. 1.7 mi. to WS-IV & B CA
CC Uvu-Ev✓
Requested by: Susan Wilson ffaj Date: 2/2/96
i
Prepared by: u Date: ���9� Comments:
s Reviewed by(LIA 4'4 �1/ff/✓!CU'/1/f�lit',/ Da
D te: -C(a
02 LP
�� eL

r
NPDES WASTE LOAD ALLOCATION
Modeler Date Rec. #
PERMIT NO.: NCO021 156 .�
PERMITTEE NAME: City of Mount Holly 2
Drainage Area (mi ) ,?01S Avg. Streamflow (cfs):
FACILITY NAME: Mount Holly Wastewater Treatment Plant ��
Facility Status: Existing 7Q10 (cfs) 9S Winter 7Q10(cls) 30Q2 (efs) 7/(, cCz
Permit Status: Renewal with Modification Toxicity Limits: IWC �_% Acu /Chronic
Major '1 Minor Instream Monitoring:
Pipe No.: 001
Design Capacity: 4.1.:" MGD Upstream Y Location /rip 7z3
Domestic (% of Flew): 30 % Downstream Y Location
Industrial (% of Flow): 70 °Ja
Effluent Summer Winter
Characteristics
Comments:
Facility wishes to expand to 4.5 MGD with reratina of plant(no GODS (m I) 30 30
construction/no public monies/noEAl LTaI"r R puc 5rJ 'L/?/9 NH -N (mg/1) l2 (vA; Tel Z3 (NN17
-!.ANC' t�'�...� c✓i Cc._:�i .Jci RT -nl�: l�+� c 3
STREAM INDEX: 11-017) D.O. (mg/1)
RECEIVING STREAM:Catawba kivcr
TSS (mg/1) 30 30
Class: WS-IV CA
Sub-Basin: 03-08-33 F. Col. (/100 nil) 20 0 2a o
Reference USGS Quad: F 14SE, Belmont (please attach) PH (SU)
County: Gaston
Regional Office: Mooresville Regional Office /�� Q—�
Previous Exp. Date: 7/31/96 Treatment Plant Class:
Classification changes within three miles:
Ca. 1.7 mi. to WS-IV & B CA /0 cQ
Requested by: n Susan Wilson i`l Date: 2/2/96
Prepared by: 'ac, Date: Ca
nments:
Reviewed by: / �Date:
�3. ^ / s /6 3.S 4, COQ�EL w

,
STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit a description of each major industrial facility dschargirg b the munici ssyystem,using a separate Section IV for each
facility description Indicate Indcate the a digit Standard Industrial Classification(SIC for the industry,the mapr product or raw
into Die the cow(in thousand gallons per day),and the measures of the wastewater discharged Iron the Industrial facility
into them Major l system. Consuh Table III for standard measures of products or raw materials. (see instr w,tions)
1. Major Contributing Facility
(see instructions)
Name 401a �mP/'<a� G�'/d /✓� /�J
Number&Street 401b* O
/3or 4-07
County
C 401c _Mot,af //4
Salo 401d. 6 o r.Z9
4
401a /}fir
Zp Code 4011 2$/L0
Z Primary Standard Industrial 402
Classification Code(see Instructions)
3. Primary product or Raw Material
(see instructions) Quantity Table
Product Tab a 1111
40:i;1 Te"rf,% •w.,:� I 403cI 9s/�/,
1403e I / Z
tl ir.r.-
Raw Material 403b
403d 4031
4. Flow Indicate the volume of water
discharged into the municipal s —f
tem in thousand gallons per day 404a b
and whether this dscharge is thousand gallons per day
intermittent or continuous. 404b Intermittent inl
❑ ( ) ® Continuous(con)
5. Pretreatment Provided Indcate it 405 ® Yes ❑ No
pretreatment is provided prior to
entering the municipal system
fl Characteristics of Wastewater
(see instructions) _
': arameler
Name 60o TSI Of A�mon,'e
4063 creme r Cwdm,:,,, G�ioM;.., Cu r,�
Number "
40cb
vaue ij0. 7S
- y �• °/ ray

}„ h.STANDARD FORM A - MUNICIPAL—
SECTION III. SCHEDULED IMPROVEMENTS AND SCHEDULES OF IMPLEMENTATION
ThisThis section requires information on any unoompleted implementation schedule which has been m
facibties. Requirement schedules may have been established he blew,Sate,or Fe n imposed
for construction
6y cotion of o a to
YOU ARE SUBJECT TO SEVERAL DIFFERENT IMPLEMENTATION SCHEDULES.EITHER BECAUSE OF DIFFERENTIF
LEVELS OF AUTHORITY IMPOSING DIFFERENT SCHEDULES(ITEM lb AND/OR STAGED CONSTRUCTION OF
SEPARATE OPERATIONAL UNITS(ITEM tc),SUBMIT A SEPARATE SE8TION III FOR EACH ONE..
e
1 Improvements Required
a Discharge Serial Numbers 300
Attacted List the dscha
serial numbers,assigned in
Section II,vial are covered by
this implementation schedule .
b. Authority Imposing Require. 301a
ment Check the appropriate
;Or
indcatng the authority
for the implementation schedule
It the identical implementation
smedule has been ordered by
more than one authority,check
the appropriate items. (see
instructions)
Locally developed plan 301b Q LOC
Areawide Plan ARE
Basin Plan .O SAS
Swale approved implementation SOS
schedule
Federal approved water quality []Was
standards implementation plan
Federal enforcement procedure [3ENF
or action
State court order CRT '
Federal court order FED C. Improvement Description Specify the 3characlercode for the General Action
Description in Table II that best describes the improvements required by the
implementation schedule. II more than one schedue applies to the facility because
Of a staged construction schedule.state the stage of'Instruction being described
renew the appropriate general action code. $ubmil a separate Section III for each
slags of construction planned. Also,list all the 3cheracter(Specific Acton)codes which
describe in more detaJ the pclution abatement practices thaw a Implementation schedule requires.
3-character general action) 301c I
description "
3-characlarspedfie aeGon 301d i -
2 Implementation Schedule and 3. Actual Complete Dales
Provide dates bnposed by schedule and ny actual dates of completion for implementaton st
a
Indicate dales as accurately as possible. (see instructions) eps listed below.
Implementation Slops 2. Schedule (yUMo/Day) 3. Actual Completion(YrM1o/Day)
a Preliminary plan complete 33Ta _J_y
b. Final plan complete 3L17b —yJ
c. Financing complete d oon7act 3 302c
awarded _J_/ 303c
d Site acquired 302d _y_J 303d
e. Begin construction 3020
I. End construction 3021 JJ
g. Begin dscharge _JJ 303f
n Operational level attained 3 —y J 1303g —J—�
3L171h —J 333h —J_/

STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
4cdlry osc spiplion of each major industrial facility dscharg-g b the munG stem.win a separate Iacdlry npuon. IndCata Ile 4 dign Standard Industtal Classification(SICpai sy g material,Ina how(in thousand Ions per )Code for and Indus P Section IV for each
into the municpal system. Consult Table III br and�rharactensucs of Ina wrastewater dscn �'Inn mepr product or raw
standard measures of products or raw materials (Sao instructions)slrvl taoery
1• Major Contributing Facility
(sea instructions)
Name
401a — AMP/,con 5 r�i✓ /YlY/J
Number&Street
City 4016
County 401c
Stale 401d
7rp Code 40le
4011
2 Prmary Standard Industrial
Classification Coda 402
(sae InsUucuons) �----
3. Primary Product or Raw Material
(see instructions)
Product ' Quoit N UnIT
Raw Material ---- ICI
ame
4WI I
4. Flow Indicate the volume of water
dischargod into Ins municipal sys•
tem in Inousand gallons Per day pya
and wnether 01is dsclarge is thousand gallons per day
inlonnittenl or oontinuous. 404b
❑ Intennrttent(Int) ❑ Continuous(con)
5• Pretreatment Provided bdeate if
Pretmatment is Provided 4>6 ❑ Yes ❑ No
entering the municpal sys
tem
poor b
stem
6 Chamcienstics of Wastewater
(see instructions)
�`. aramalar
Name is (c� P.r/ '
' arama r Z.�nc
Number
Value O0j6 �/ OS

STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Sublacihmil arc description of each major industrial lacility dstharrgging loth e munici � sryystem,using a separate Section IV for each
ry'. W m. Indwte Ina a digit Standard IrWuslrial passifiwoon(SIC�Code d
matenal, no hew(in thousand gallons r day),and Ure Ono recwnsacs of the wastewater d 5ch 5�'me major product or raw
into Ina municipal system. Consuh Table,111'or standard measures of products or raw matanai rl tiDns)strtal laosry
1. Major Contributing Facility
(sea instructions)
Name
Number dStreet
City 401b r1/7 E Ctia�/Gf e °e
County 401c _- !�/J�n f H fV
401d _ 4 fon
Stale dote
Zip Code 4011
2 Primary Standard Industrial 402
Classification Code(sae Instructions)
3. Primary Product or Raw Material
(soe instructions) Unas(See
QuanliN
Product 4IXia /)vPd ,tn;flte✓ Jgtw`III)
403cl 403,
Raw Material 40:b
4031
4. Flow Indicate the volume of water
discharged into me municipal s s.
la 404a Z 7
m in Inousand gallons per clay
and wneuwr This dscnarge is Uvusand gahons per day
inlennittenl or continuous. 404b
❑ Intennieent(inl) ® Continuous(con)
5• Pmtreahnent Provided Indeate it 406
Pretreatment is provided prior 10 ® Yes ❑ No
enwnng the municipal system
6 Characteristics of Wastewater
(she instructions)
afameEor _
Name GOD JS /
' arame r
--- -: Numoar
... Value /2S:S /9,5 3.S . 205
O°z --. 02 �.02

OEM
STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit a description of each major irhdusan facility dscharrggirg b lue municipal system,using a separate Section IV for each
mate .[no now( thouse the a Ions Standard Industrial gassificahon(SIC)Code for me industry, no major product or raw
material.tun how(in thousand gallons per day).and ar C harnctensncs of the wastewater dscnargad Iran P�tndustrhal laohry
into tha municipal system. Consul Table III for standard measures of produeLs or raw matanals. (SWIM
VW lads)
1• Major Contnbuting Facility
(sue instructions)
Name 401a _ �rea 76✓P ✓P 'n
Number&Street 401b.
City 4010
County 401d
State 401e
Zip Code 4011
2 Primary Standard Industrial 402
Classification Code(sae Instructions)
3. Primary Product or Raw Material
(see instructions)
Units(Sae
Product 9uaytiN TeM21111
400a -- I�I 4Nu
Raw Material 403b
4031
4. Flow Indicate the volume of water
discnargud into the municipal sys•
Wm b thousand gallons par day gpya
and wnether this dseharge is —��thousand gallons per day
intermittent or oonnnuous. 404b
❑ Intertnitent(int) ❑ Continuous(con)
& Pretreatnent Ptovidad Indcate it 405
pretreatment is provided prior to ❑ Yes ❑ No
entenng the munrapal system
6 Characteristics of Wastewater
(see instructions)
E
ramatet
me /y,-1rome r
mber
ue 02 2 p

STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit a description of each major indusbW fadley dtsthaa" lo the municipal ssyystem,using a separate Section IV for each
lacility description. Indicate Ne a digit Standard Industrial CCll"$I cation 1SIC Code for the industry,the ma' r pmducl or aw
malerlal,vte how(in eWusantl gallons r day),and the Utar-dclerisoa oI the wastewater dscnargao from Ne ndustnal laoilry
nto ate municipal system. Consuh Table III for standard measures of products or raw matanats. (sae inswctions)
1. Major Contributing Facility
(we instructions) /
Name 401a C e�a / ��C b��i'e5-
-
Numberd Strael 4011) _ P. O . Box, 71rP
City 401C
County 4010
State. ale _ N
Z,p Code 4011
2 Primary Standard Industnat 402
Classification Code(saa Instructions) .
3• Primary Product or Raw Material
(see instructions) Units(Soe
Quantify Ta Dli.llll
Product 403a Tez/./e,4,.t;•/,u•i 403c y. S
L/ir„:r�T— ICI axk
Raw Material 4(M
. 4031 I
4. Flow Indicate the volume of water
dischargud into the municipal sys-
tam in mousand gallons per day 404a �. Z
and wnatner ens discharge is enusard gallons per day
intermittent or continuous. 404b Imennitten nl
® u ) ❑ Continuous(con)
S Pretreatment Provided Indicate if 405 -
pretreaenentispmvided prior to ❑ Yes NO
entenmg the municipal system
4 Characteristics of Wastewater
(see instructions)
ardmetar
Name $UD
4)6a arame r v L„ le Ga.✓ /h'ff
Number
_. Value �Z scot G,02 z,02 .O02

STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit a description i of eaeh major indusbW facility dscKaarging to the municipal system,using a separate Section IV for each
maiien Gucnpuon. Inr7iwta the 4 digit Standard Industrial Classification(SIC)Code for the industry,the major produce or raw
materW,pee tow(in thousand gallons per day),and the characteristics of Ole wastewater dlschargaa Irom the ndusthal laolay
into pre municipal system. Contra Table III lot Standard nvw"M,Of products Or taw materials. (sae insuuctiorts)
1. Major Contributing Facility
(sea instructions)
Name 401a �e �o� SpeciF�t 'cS
Number&Street IOIb
City 401C
County 401d
State 401e
Zip Code 4011
2 Primary Standard Industrial 402 -
Classification Code(sae Instructions)
3. Primary Product or Raw Material
(see instructions) unas(Sea
Product 4Na Ouanin1 Table tz 111
--- I I 401e
Raw Material 403b
-- 4031 I
4. Flow Indicate pre volume of water
discharged into the municipal sys-
rem in thousand gallons per day 4lka
and wnether this dscrharge is mood g"One perday
intennioanf or continuous. 404b
❑ Intermitan kinl) ❑ Continuous(con)
4 Pretreatment Provided thdr,ate it 405
pmtreatinent is provided prior to Yes ❑ No
entering the municipal system
6 Characteristic of Wastewater
(sae instructions)
�;� � ammeter
406a Name Nrke/ Aoaon:4 6ca+/ TSj Zit Ui G
ammo r
Numoer
4:6b
Vaue �,oZ 7$ o- -7

L
LIHM
STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
ldcaity Submit a description at each mapr industrial ladiily,discharging
material, cnp�. Inchoate th4 4 digit Standard Induslnal Classib r w munidpa�I sy Me how(n thousand aa ppe ficauon(SIC)Codes using a separate Section IV fo each
into me municipal system. Canss,A ablerlclabi anal u�rd0nsar�asctedsucs o for the industry,tha
thewaslawatardisch =fpmauclorraw
1• Major Conldbutin F ws of products or raw ma Irom odusudl laol,ry
9 Facility Iedals• (sue instructioru)
(sea instructions)
Name /
401a r2 i.9
OP/ leis
wi.0I9
NumberA Street
City 401b
County 401C
Stale 401d G
zp Coda 4010 /V
4ov z-_
2 Primary Standard Industrial
Classification Code(sae Ins 4@ 3 700
Instructions)
3. Primary Product or Raw Material
(soe instructions)
Prods) puanYry Un7 a(S,
43a r ur` � -- 403c S 7
Raw Material 403b 4
C/crf II=14031
r^
4. Flow Indicate the I
dlscha VOIWne of municipal6water
bm n thousand gallons er days n
and wnamer this dscna 404a
intennieanlorcon0 r9ed lend gallons per day
nuous. 407b
�� Inlemlluent(inl)
Pretreatment Pro id d 13 Continuous(Con)
�d 406 ,® Yea
enters Pretreatment isprovided Prior b ❑ No
entering me municipal system
fl Characteristics of W
(see mslruebons) Wastewater
atemeler
406a Name .DOS Tff
r CG /��Iniia.•4 CaoriO.an r�liion Leo
405b Number
Value 8.7
92. 7 0 //..7y
/Sy �.Gz 09�/ e•,os

Elm
STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit l tl riptio . Indicate eaeh major industrial rdInddsUtarging lo the municipal system,using9 a separate Suction IV for each
leaden lathe flu ( tho the 4 digit Standard IOrindustrial passificaoon(SIC)Coda for me indusuy,me nwjor produce or raw
matanal,the flow(s thousand C.g,n T ppeer day),and the maraclehstia o the wastewawr discharged Iran w prod ural Wdw
into lee municpal system. Consutl Tabte III or aW-d"maasuros of products or taw mr discharged
(sea instr W MdU
1. Major Contributing Facility
(sue instructions)
Name 401a
o/�lrr/' Gi1
i
Number&Street 401b
City 401C
County 401d
Srale 401a
Zp Code 4011
2 Primary Standard Industrial q02
Classification Coda(sea Instructions)
3. Primary Product or Raw Material
(see instructions)
Units(Spe
Product 40t'ia 140-3
I 4W,� Tabk�tell
C
Raw Material 400b
4001
4. Flow Indicate the volume of water
discharged into the municipal sys•
lam in thousand gallons per day 404a
and whether this discharge is thousand gallons per day
intermittent or continuous. 4O1b Intermittent inl
❑ l ) ❑ Continuous(con)
& Pretreaunent Provided Indicate it 406
Pretreatment is provided prior to ❑ Yes ❑ No
entering Ina municipal system
6 Characteristics of Wastewater
(see instructions)
arametar / d
43ca Na time r �r Er Game
Pv 'Zinc �rA'na� Cr.n,JP M 4$
Number
40rb
. Value
Value D y Of . L S7 ti c, a5 t'
C, l2 / 5

STANDARD FORM A - MUNICIPAL
SECTION IV- INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit a dasuiption of each mapr irdustrial ladtity d
bodily munj uo t' ndtate Ta 1 d9it Standard Dtds yb Te munir4 sryystem.usingg a separate Section IV for east
malerlal,sta now(n ctousantl gsllans per do ficaoon``SIC�Cc for lrlo indus into me muniapal system. Consult Table 14 lui standard�tllar'aclerisucs of the wastnwaWr d �'Pto major produn or ruw
measures of Products or raw rnau��r� a ono)tn;l lao�iry
1• MajorConlriDutingFaciGry l m.cuons)
(sea insuuctions)
Name /
' rota �Qr7vn �n n. �n
n4 /i/qLA C �
Number d Street
City 401b
County 401C �!n/e
State 401 d /icr i n
ZZp Code 4010 Y-//
4011 ��/�4
2 Prmary Standard Industrial 3 yr/J 3679
Classification Codo(sw Instn4fjQns)
3. Primary Product or Flaw Material
(506 InsuW aoni)
T
PrProductUn
aox 1. y� Y-I
Raw Malarial f= ICI- I 4031 I
4. Flow Indicate the volume or water
d,scnargao into the municipal cys-
temntnousanygallonsperday rpta 7G, N�7 .and wnelnar Mis dscnafga is �_ft"and Gallons par day
Intermittent or conGrwous. 409D
❑ Intemtimnt(nq ❑ Continuous(con)
S Pretreatment Provided Indcale it
prelmatmanl is Provided 406 ❑ Yes No
"Wring In pal system
Ina munidPoor to
6 Cnaracteristics of Wastewater
Ooe Instructions)
alame ter �/
Name /jO Tsf O(•(> •4.`lran;a CGr/ni;rrj C�ian;�r.
areme r
-tOcb Number
,,... Value 7 G, 002
10 Z

STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit a description of each major irdushial WIhy dstlua�p
facility o.ucnpum. macaw me a dyrt Slandard 4dusbat C�assib me mu
nld � system,usingy a Se
malenw.tna how(n mousdnd Ions icasm 1SIC f cc Ion me indus Pareta Section IV for each
inlo ma municpal systnm. Con�Wt T pen caY)'and cr>arswristia of the waswwawr ascn' uY.me andN r Producl or ran
abw W br standard measures of s- from me ions) riel taoliry
1• MajorContrioutingFacdiy Produasorrawmawnats. (saeinstrutions)
(sae instructions)
Name 401a
Numbers Street 401E
City
County 401c
sure 401d
ZP Cade au 4011
2 Primary Standard Industrial
Gassifiration Code(see Instructions) 402
a Primary Product or Raw
(see m4lruclions) Irldwlldl
Units(Sae
Product �• Qua11iN
403C
Raw Mawdal �Ol3b = I4I I 4031 I
4• Flow Indicate me volume of water
ascnarged into the municipal Sys.
cam in mnrsard gallons per day 40,E
and rnetrwr mis asenalge a --- �Cwuiand gahons per day
intenninentorcontinuous, 404b
❑ Intermioent(nt) El Continuous(con)
S Protreaonem Provided Inic;ua it 406 Prelmalmem is Provided ❑ y� ❑ No
uncaring the munici Prior W
Pal sysWm
6 Characteristics of Wastewater
(Sad mstmctions)
aramewr
NameLe.a
ararne r z%ter
Numoer
. ....•::�k?r: Value c.0 2 ,D� 7 O

STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit a description at each major industrial laciluy a paI ry ma 6rlal,ptpt pow nbdicaw Iho 4 d4l SlarWard IrWus y6�oon SICJ Godaa�.usingg a se
( ewusand g�llona per da (( lot Pre indus P�totiOn IV la eadl
into ore muncpd system. Consult Table 14 W;b tlwa;wnsaes of the wasI wator 6 �.Pre mapr proeucl or raw
landard measums of products or raw malen Ilse,aIIrom db rwututal la'I"y
1. Major Contributing Facility ( nSWcauru)
(sae instructions)
Name /jeC r
rota _ �t Ce�4esP
Number d Street
City �01D _20. Rax fr��
County atc Moun f Ho//v
Sete 401d Go fon
Lp Code Ole
�011 yI -2
2 Primary StandardI � ?—Vb'9 9y�
Ctassiacation Code(saesae In,bucCgU)
a Primary Product or Raw Malarial
(Sao instructions)
Unas(Soe
Product Q�antiN lay
403a Oi�'rr7� y63c 262,7
Raw Malarial — II--I I �_/
C 403t
4. Fiow Indicate the volume of water
d'scnargad into the municipal Sys.
Win h crcusarb gdbns per day �Osa � .and wn"anar atis dscharge is vtousand gaa per day
intenniaent or contin s.uou
'4Oab ❑ Intenninanl(inl)
S Ptotteaunem Prwidod Continuous(con)
d �06 ® Yea entering
I'd is provided prior b ❑ No
entoring ure municrpd syaasm
4 . Characteristics of Wastewater
(Sea instructions)
aramamr
40Ca Name �a� TfS Cj'�G
Value /9�.7 /g S7
3Z.8 N, 1.01

STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit a description of oath major irrduspiai Iacipry ouscnpoon. Iny�w eras ��Y anggiinngg b the muridpaI rystem.usin a se
melenal,the pow h digit Standard 111d'u =Lnjw o lh& SIC)Colo 99 Pete Section IV lot each
into Ino munip al(: uwusand gallons per day),and the diaractedspcs o Inn for the ndustry,ore mapr pmaucl or raw
P" ystem. Consult Table IN br standard nwasures oI is or ra m dscals. (Su pan a ndusula!laol�ry
1• Major Contributing Faciiy Products or raw materials. (sae instn.,pons)
(sea instructions)Name r01a /JOec,h//f71// Ce%i'7 PSP
Number d Street
City 401E
County 401c
SGl@ 401d
ZP Code 401e
�011
2 Pnmary Standard Industrial _
Classification Coda(sea Instructions) 402
3. Pnmary Product or Raw
(soe instructions)
��
Product Quan�lily Unas(Sea
4 s00CL
Raw Material 4M b —�� I I—
400d I 4031 I
4. Flow Indicate the volume of water
d,scnargod into duo municipal sys-
Iam in Inousand gallons Far day �Osa
and wnetner Iris dscharge is -- �bousand gangls per day .
intermittent or oontutwus. 406b
S Pretr ❑ Intennident(inq (] Continuous(con)
oatmem Provided Indicate it p5
pretreatrnenl is provided O Yea [� No
entering the municipal system b
6 Characteristics of Wastewater
(see instructions) .
aramumr / /
Name fXe7 o� /Iv' ; J
a name r /tfr� LPop Z/' C
.... .,, Number
Value �. 0 2
L8/2 c.07

STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Su ryylQ" scriPlion of each mow inWrsew paI ry g
inw ino n4niap:j maianw.via he,systarn n rnousa4� r aoy)• q s w q S 1 Cada�or narWus"Pefewy,p�p �aucl or raw
Consuq T IY br swrslarp xrwrgao 4om llo iMlualAil laaery
I• Major Contributing Facility o1o'°sl'nw olpmducy or raw rnawnala. (aue insut.:Gons) '
(suit insuucvons) .
Name
Numbor 6 Slreal
City :jib&
325 T.<Pus ea Qo
County 4)10 MCI
! //
S6sr Old ,<o
Z,p Code 4018
2 Primaryr011
Stan Industrial 2 g y .
Cw lio
ssi6can co"Co (sw InsWcdgls) � 3 2gZ/
a Primary Pmducl or Flaw Material .ouv 4uuaons)
4ma 7fK Wf T
Raw Mawrial <orr 'o �icd.< I —�L
a. �OOb ��---- erod I I
Flow indicale Pw vo(ryry of wale!
as 1940Mol into Ine M,1;4w sys.
and wnalnar pit S a Ions per ba&Cnatq.is y QQ 2 7 7/6- ,
inwnnieant or conun,o,, -� ti 16Par day
r00 Inwrtni
S Preueaoneru Prwirbd Indcay itoent(w) � Continuous(con)
pmlreaonem is provi a'd prior to Yea ® No
anwring We municipal syswm
6 Cna2cwrisLa of Waswwater,
(Sao vulruc6ofui)
aramuwr
Nmd
fame f O� -<r(/in,4.n �9io<i.4i•r G v /
Ve
Value
4 9 OZ/ <, oz a,O2

STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
SCuDmil a dosaiption oleacn maja intlusuial
nwwnal�, sp�epbon. Ina�caw PN 64 SwrWal�y4 w1r,", b mII' �l%odbswm.using a sePardw Sonion IV la info Ulu muru.pal sys�izz T=Cwy).sold Pw marncWt6o lr for Tn in soy,sw a Sa onP(Q lv i or am Pw u or r"wr anw,rg,q Lan w ndususil laoory
la slarlaara rtrasulas d prod„cv or raw mawnals. (sw insuucoons)
1• Major COnlnbu0n f .
(saa insuucea s)g acyry
Name rou Sc� SGi�r1�i.�tS
Numbor d Sueel
City 4010
Counry 4010
... Srew 401d
ZIP coda 4010
4011
2 Primary Sw I alCwssi6CaGon Co,;a(s&o Ln nCGOry) 4
-�
Primary PmduCl or Raw Malarial
(son insllbcuons)
P(Daucl fluati Units(Sae
�OOa T;`fli'illl
Raw ma � 1 ICI-I4 I
4• Flow Indcaw tw vol
o'scnar lun4al Aya.
gad info un,ons per al y
wm n crowsand gallons per day 4Ola .
and wnelni a co dnuow&a y -�ppysara
alwrtmodnl Or CalOrapYs, gaUoru Par day
p0 ❑ "I'llmoanginl)
S Preuoamanl Prgridtd . ❑ C0^o^Y0"s(con)
Indcata if ❑prOl nl is provided prior W 406 Yw ❑ No
anwming uj u,e nwnrpal syswm
6 Cna,4cw6$Uc&of Waslawaler -
(abtl Y1s11Na6ons)
afamalar /
Name /Imm oq'q �APno
ar..ma r Tss Zinc O tC
N mbar
Valua
•GZS l 7

STANDARD FORM A - MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit a dasfriplion of each melof indusvial lady
maibry dwcrparrl. hccaw vu s dryl Slandald Ind,I 10 M r w%Q malurw,via now(in uio sand �pe aeyy1.ar10 uw�u�tu�ras�a6caoon ISIC�Code wm. a"par a Seaim IV for aacA
inw P1a muruapal syawm Consuy7rIU lo!a a`wriasca a ewi waswwa�ur� s W.�°rn°ppr p�w�,n or ruw
1. wndor0 rswasurw a prod„cts or raw maws bran tlo nousvw laosry
Major C nlribuung Facility • lwa nsw:bauJ
(sea inswcbonsl .
Name
au aso -Hu �P ll_
Number Q Street
City 'per �r Can Sf.
Counry 49Io _ Rr/inonf
suw ♦Old
Code 401e v r
a011 Z g� dy`�
2 Wsj Nn S d I
c ndustrw .
lesaiEceu Con oda(see Ir t^+cdons) a02
3. Primary Product of Raw Malarial(sea nalrueuons)
Produa uniu(Sae
aooa
Raw Maw saxrial ---`_ I
{0.b � e00d ,
Flow I
aoJf
a• —_—_�ndiww ow vauna of water daCtirgutl nw Ina munir:ip,al Sys.
Wm n elousarsi gallons parlay �Ola end wnYlrial vus dsaiarga Is ��vnusany
nwmtioum or conunuous. Bests Pa day
Moab ❑S Pre eru ueavn Pre' ) � tn Conuous(con)
Pmlmavnum is proYijadp��u � ® Yaa Imermioanl(nI ❑ No
unwring vra n,,r ipW syalam
r'• Cnaracwrisua ler
Of Waslawa .
(aea mullucuons)
Namama' Nun o f C4dj-0.w.. Ch/JnJ.u,.r Z".C�
30(/ ch7 0 GZ t
da�NeI /s -/ ay /Y co/ sr, r5
Q/e jyn�i�ranf /� '4/ ./
OAf��f 9/srr P/riS �I/'f'd. D�e�S :�G adP e

STANDARD FORM A . MUNICIPAL
SECTION IV. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Subm'I adc scrWpon of each n�alor intlusoial _
trial Ia Jl y)�r� ry u�g
n°'"mwtiapW Wginci to via
;yo4W`m'WCgns�p r Y Iw y I�e^o oS �Cada'.nusruL,a dlur "Pataw sanion IV W raC,
sand u
s r mducl or raw
orn
Major Conuiou0ng Faciliy oi P ow.w raw mawrwts. (sw insy4por J a laoury
(seainsuuceons) -
Name
4ou Tadao • /�r.9.(�; s�e
Number Q Suael
City 401b
Count' 4010
Silo 40W
ZP Coda 4014
4011
2 Primary Slaodard Indusuia! 42 ---
Cla,s'"IiOn Coda(sae kuuwzww)
2 Pomary Producl or Raw Maury)(sou insuuccons) .
Prowct Unas(Saa
409a _ IuLiLw' lL
Raw Maurial 400b _•-ICI
413,
40Ci1 I�_
4. Flow lndicaW ele Voluns of%a&"
kl in l y a4 uw WiLar"Sys.
and wirauwlar 6�S Pot day �4 .
iniarmimnlorconanou& is -mo bGauaK Pot day
S Preueaoren Prwidd lnd t 4040 ❑ Ia mu
"n) ❑ ❑
Ccnnous(con)
Pmlmalmunl is
n Pror1U406 Ye Noanwring ula mu6pW syawm b Cnaracudskcs 01 Wasuwaur
(sae irul=jions)
aramaler
�KAa Name 2%nC G aroma r Qn%de e� CN/
• Numoor ��'''/•pro S�dc� /{yam
p / .•
17 G.0oa7 c. a1 G.O/ 4.Jr.1�7

•�---� � I '�\� /��i . log �a� I� �, I C �_ � /
j G� _ ice, � / -}`� 1 I 2 '� b / ,•Lf� \ � rt. -. / � � '\\ �q ' ..1
zooms �� ��• I �S V �_> > 1 ( ijt��u )=.\ / /
-3-106
a w 1
•� \rb I ]I .(\/ �_•'/_ � ( / �-.•� / 1'qj$� / �� � i• \ .'...i. - � E "GNARL [ vE —_+ u
!• ••• 1' ' (\ OCaA'a/ �"-�. a LHatl� .. ry la Om�• � w
C Wgevmw'` \v` t` '6a Md0 m r �Llbra ) e avE 'l. / 14( v�
�. 1, � � 1'._ _ / / i 1 OCE�,O.( e 1•� / a O u
� l 91 Tnk�
._ l r —� J a� ,1. �V / 1 T30„
it
0.
(��,, ' W
3904
- ,8 .. I \ ze.i � •.: f \_�l��, se _ oosdl°''o�/2f ' � / , G
s
• J /T 8 f
. / sc �� C a
Io1�t�Bely I
I op
oo iW��ll�• it r/. /..,
o o U t ('U�
., ,Eby ezer Ch
If
]902
0 �wate7 w.-✓ �1 �'��\ 1 �� s �r ) ��•
�k��P ��_� „Lr L� �'✓ r I
• T.
o \
r
Ct
a ,
am
PIPELINE A
_
�em > c Z�']__------ '� Rest rees '% 85 1 i
a �] vt
�_'�n'•..Cem,1'` -_� \��I B :wtl Towll� IQ
n I e I O C i1 gym.• ( I. _ ��,�
�i n•\✓DY I,�1. �� K'edle>aa—pC4 �/
r�\a .rvOl000'^N.
/ ,�I•een (th
oe 1 �� ` ` O I b , `mow' I••
<:A1a�tlei�Ch� CY� M�N • :r ! Trailer
\ 11 I �4� Sacicd eart � '- Park
I •Colle e � � / '�•1 �� � �\ \ � ._.�, 1.
• 4 • '30" •t•'97 CHARL .e. w.:"""To".a —,e,z 35°15'
499 .E 81a00'I MILE � 970 ((f G CIO t9ic91faWN[y Iny ROAD CLASSIFICATION �y
9
Primary highway, Light-duty road, hard or oPC
7000 FEET hard surface___ - imoroved surface........ msos

a[C[33 IIDIO ,
pus e°LDwD
KMM
eulDwG�
•. �„IADC -• [LMi1[+ CL111NIC11
antic rw.` N
•Y x•>
x•[
\ pDv[Jnt s[xLD[
O i
� � KC[!3 Ny0 GIL CNale[P IG j
r �DVSrP�aL 3[Wf(
SLLODC NiLO✓G fatal
Em i
si�JT � N• MI
CIEGC GrIx4 Nd3 SiW f{ .LD4 [fwNafS
�/ H Rw4 SiaigN .
lIA2 GrK KOS I .
!aeme�e✓)
I 1
I c
K+anoxusx x•r ae[Pa[xFiDN SumG Nunxc r .
x•J em Suw ,
J
i
--- MT. HOLLY, NORTH CAROLINA
SEWAGE TREATMENT PLANT
c3u.ee +nu
SITE PLAN
DRAWING N° I OF 6

r
I I k E C PE R V IE 9D MAR 2 8 1996
FACT SHEET FOR WASTELOAD ALLOCATION
Request# 8443 (a)
& 8443(b)
Facility Name: Mt. Holly WWTP N.C. D6i']'. of
NPDES No.: NC0021156 x.NVIRONN -NT. HEALTH,
NATURAL RESOURCES
Type of Waste: 30% Domestic/70% Industrial
Facility Status: Existing v 1996
Permit Status: Renewal MAR
Receiving Stream: Catawba River
Stream Classification: WS-N CA Oi6151OA OF ENV29 `.ttt"?.
Subbasin: 030833 MONILSYatE fl Rltt:`• ..v;F
County: Gaston Stream Characteristic:
Regional Office: Mooresville SgG USGS #
Requestor: Wilson Date:
Date of Request: 2/2196 Drainage Area(mi2): 2015
Topo Quad: F14SE Summer 7Q10 (cfs): 95 (min. rel./runof
Average Flow (cfs):
IWC (%): 6.0 @ 4 MGD; 7 C
4.5 MGD
Wasteload Allocation Summary 3o9 z(c fr).71 to c{S
(approach taken, correspondence with region, EPA,etc.)
Facility requesting renewal of existing permit with modification for expansion to 4.5 MGD through
re-rating of plant. Town of Stanley may connect to Mt. Holly. Mt. Holly must submit an
engineering report showing justification for the capability for the additional flow before this type of
expansion can be approved. Concur with Region that engineering report should be reviewed and
approved before expansion to 4.5 MGD is allowed. Recommend renewal of existing limits, some
metals monitoring deleted from NPDES permit and will be monitored through pretreatment LTMP.
*Data analysis shows that phenols should be limited. Used 7Q10 flow to develop limit, 30Q2 not
available. Belmont water intake located downstream of Mt. Holly discharge. 1,1,2 Trichloroethane
has shown below detection level for two years, recommend monitoring be dropped. Fluoride
present in effluent but not a parameter of concern, recommend monitoring be dropped. k4x L F Z
• ,ticr/A;a;c; b
Special Schedule Requirements and additional omments from Reviewers: 2
�/ivr < lyti�/ (asaOyesi/�a vl��„o/5) , rn�ilyn%d iHsfcad oL .iN•f�; �l /
W46-C 1 as_T of
G �iS�ri�B /iin,is. /use d�'aeu��•u ;ru/G+/� .l//-r/� .
G _T>
Recommended by: - 1 Date: 3/15/96_
Reviewed by I � J
Instream Assessment: Date: aO 4(v
Regional Supervisor: . Date: 3 Z6 £6
Permits &Engineering: /' .o ��t L( _ Date: 3 ��
RETURN TO TECHNICAL SUPPORT BY: APR 1 R 1996

2
CONVENTIONAL PARAMETERS
Existing Limits:
Monthly Average
Summer Winter
Wasteflow (MGD): 4.0
BODS (mg/1): 30
NH3N (mg/1): monitor
DO(mg/1): monitor
TSS (mg/1): 30
Fecal Col. (/100 ml): 200
pH (SU): 6-9
Residual Chlorine (µg/1): monitor
TP (mg/1): monitor
TN(mg/1): monitor
Recommended Limits: 8443(a) 8443(b)
Monthly Average Monthly Average
Summer Winter Summer Winter
Wastetlow (MGD): 4.0 4.5 4.5
BODS (mg/1): 30 30 30
NH3N (mg/1): monitor 12 23 NH3 tox
DO(mg/1): monitor monitor monitor
TSS (mg/1): 30 30 30
Fecal Col. (/100 ml): 200 200 200
pH (SU): 6-9 6-9 6-9
Residual Chlorine (µg/1): monitor monitor monitor
TP(mg/1): monitor monitor* monitor*
TN (mg/1): monitor monitor* monitor*
*Nutrient limits will not be applied per Lake Wylie Management Strategy, since additional flow
from Stanley will only be 300,000 GPD. Also, will not penalize Mt. Holly for taking Stanley
wastewater.
Limits Changes Due To: Parameter(s) Affected
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow NH3 @ 4.5 MGD
Other(onsite toxicity study, interaction, etc.)
Instream data
New regulations/standards/procedures
New facility information
(explanation of any modifications to past modeling analysis including new flows, rates, field data,
interacting discharges)
(See page 4 for miscellaneous and special conditions, if applicable)

3
TOXICS/METALS
Type of Toxicity Test: Chronic Ceriodaphnia P/F
Existing Limit: 6.0%
Recommended Limit: 6.0% @ 4 MGD; 7.0% @ 4.5 MGD
Monitoring Schedule: FEB MAY AUG NOV
Existing Limits
Daily Max.
1,1,2-Trichloroethane monitor
Cadmium (ug/1): monitor
Chromium (ug/1): monitor
Copper (ug/1): monitor
Nickel (ug/1): monitor
Lead (ug/1): monitor
Zinc (ug/1): monitor
Cyanide(ug/1): monitor
Phenols (ug/1): monitor
Copper (ug/1): monitor
Chloride (mg[l): monitor
Fluoride (mg/1): monitor
Recommended Limits
WQorEL
Wasteflow (MGD): 4.0 4.5
Copper (ug/1): monitor monitor
Zinc (ug/1): monitor monitor
Phenols (ug/1): 11-(daily max.) Aoq (daily max.) WQ
jjjs w 3-qzP 7i6c{5 UfGfffh' , /993 �t�a�w�9V
Limits Changes Due To: Parameter(s) Affected
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
New pretreatment information
Failing toxicity test
Other(onsite toxicity study, interaction, etc.) Cr, Chloride,Cn,Cd,Pb,Ni,
Ag, MBAS will be
monitored quarterly in
pretreatment LTMP
Parameter(s) are water quality limited. For some parameters, the available load capacity of
the immediate receiving water will be consumed. This may affect future water quality based
effluent limitations for additional dischargers within this portion of the watershed.
OR
No parameters are water quality limited, but this discharge may affect future allocations.

4
INSTREAM MONITORING REQUIREMENTS
Upstream Location: Highway 27 Bridge
Downstream Location: Highway 29 &74 Bridge
Parameters: Temperature, DO, Conductivity, Fecal Colform
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION& SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility d monstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes V No
If no,which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate? Yes_ No
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
Special Instructions or Conditions
Wasteload sent to EPA? (Major)_(Y or N)
(If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old
assumptions that were made, and description of how it fits into basinwide plan)
Additional Information attached? (Y or N) If yes, explain with attachments.

I -
Facility Name Mt. Holly WWTP Permit# NC0021156_ Pipe# 001
CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay
Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality
is_6_% (defined as treatment two in the North Carolina procedure document). The permit holder shall
perform quarterjy monitoring using this procedure to establish compliance with the permit condition. The first
test will be performed after thirty days from the effective date of this permit during the months of
_FEB MAYAUG NOV .. Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DEM Form AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in
association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity
sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Environmental Management indicate potential impacts to the receiving stream, this permit may be re-opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require immediate
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 _95 (min.release+runoff) cfs
Permitted Flow 4.8_ MGD R mmended by:
IWC 6 %
Basin & Sub-basin CTB33
Receiving Stream Catawba River
County Gaston 6Date 3/1/96
QCL P/F Version 9191

Facility Name Mt. Holly WWTP Permit# NCO021156 _Pipe#001 _
CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay
Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality
is_7_% (defined as treatment two in the North Carolina procedure document). The permit holder shall
perform quarter�y monitoring using this procedure to establish compliance with the permit condition. The first
test will be performed after thirty days from the effective date of this permit during the months of
FEB MAYAUG NOV .. Effluent sampling for this testing shall be performed at the NPDES permitted
final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DEM Form AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in
association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity
sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Environmental Management indicate potential impacts to the receiving stream,this permit may be re-opened and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require immediate
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10_95(min.release+runoff)_cfs
Permitted Flow 4.5 MGD R ommended by:
IWC 7_ %
Basin & Sub-basin CTB33
Receiving Stream Catawba River I
County Gaston Da 315/96 \
QCL P/F Version 9191
r.

Page 1
Note for Jackie Nowell
From: Carla Sanderson
Date: Fri, Apr 26, 1996 8:32 AM
Subject: FW: Mt. Holly Phenol limit
To: Jackie Nowell; Ruth Swanek
Let's discuss this today Jackie please let me know when you have reviewed the Sandoz file
and are ready to discuss. I would like to get the final WLA out also, I think the engineers use
the FACT SHEET when drafting permits sometimes - so we should act quickly on this.
Thanks!
From: Carla Sanderson on Mon, Apr 22, 1996 12:55 PM
Subject:RE: Mt. Holly Phenol limit
To: Jackie Nowell
Cc: Ruth Swanek
OK- then it looks like Mt. Holly should have the phenol limits calculated using the 30Q2
flow estimates(as was done for Sandoz). We can wait until Ruth returns tomorrow if you
think we still need to discuss this further.
From: Jackie Nowell on Mon, Apr 22, 1996 11:41 AM
Subject: RE: Mt. Holly Phenol limit
To: Carla Sanderson
Yes, max. predicted value of 450 µg/I with allowable concentrations of 117 ug/l @ 4 and 104
ug/I @ 4.5. Actual phenols values of 150 µg/l, (twice), 140 µg/I and 110 µg/l reported in the
past year's data.
From: Carla Sanderson on Mon, Apr 22, 1996 11:28 AM
Subject: RE: Mt. Holly Phenol limit
To: Jackie Nowell
Does reasonable potential still show they need a limit?
From: Jackie Nowell on Mon, Apr 22, 1996 11:25 AM
Subject: RE: Mt. Holly Phenol limit
To: Carla Sanderson; Ruth Swanek
Well probably have to discuss this one some more. Another look at the flows in this
segment of the Catawba River and NCAC .0206 on flow design criteria for effluent
limitations, I had decided that if we didn't have a 30Q2 to apply for the phenols or phenolic
compounds limit, then we should use the minimum average flow release from the dam plus
runoff of 329 cfs. The reg says that the minimum instantaneous release should/could be
used for acute toxicity concerns. Since phenols isn't a toxic but an aesthetic standard then the
min. instantaneous flow may be too stringent:
BUT.... A look at the old Sandoz file, an industrial discharger located just upstream of Mt .
Holly. and I found that Sandoz had gotten a 30Q2 flow of 716 cfs at their discharge from the
USGS in 1993 and Ruth had applied this flow to calculate a total phenols limit for Sandoz.
Since there is only a DA difference of 4 mi2 between Sandoz and Mt. Holly , I would think
that I could use this same 30Q2 flow of 716 cfs to determine a new phenols limit for Mt.
Holly of 117 µg/I @ 4 MGD or 103 µg/I @ 4.5 MGD.

Page 2
What do you guys think?
From: Carla Sanderson on Mon, Apr 22, 1996 8:45 AM
Subject: FW: Mt. Holly Phenol limit
To: Jackie Nowell
What have you determined regarding the flow for this one? I would like to go ahead and
send the final WLA out as soon as possible.
From: Ruth Swanek on Thu, Apr 18, 1996 4:21 PM
Subject: RE: Mr. Holly Phenol limit
To: Carla Sanderson;Jackie Nowell
Shouldn't we use minimum daily flow from dam?
From: Carla Sanderson on Thu, Apr 18, 1996 4:18 PM
Subject: FW: Mt. Holly Phenol limit
To: Dave Goodrich;Jackie Nowell
Cc: Ruth Swanek
Since our standard is based on chlorinated phenols,I think Jackie's application here is
correct. When we met on this last September,I beleive we decided that we will limit
chlorinated phenols according to the state standard and monitor for T. phenol. I am sorry we
have not been writing this on the WI-As correctly.
Since the storet code is set and based on testing for chlorinated phenols,I am not sure we
should make the recommendation for chlorinated phenols, but we should probably add
monitoring for T.Phenol. Please let me know what your thoughts are on this and if we
should make the change to say chlorinated phenols in permits(are you already doing this-
per your GW remed and storage tank SOP - it looks like it).
From: Jackie Nowell on Thu, Apr 18, 1996 12:56 PM
Subject: Mt. Holly Phenol limit
To: Carla Sanderson; Dave Goodrich
In case,my scribbling on the facisheet is unreadable, my comment is as follows: 1) I would
continue to use the phenols parameter based on the STORET parameter code, already
monitored by the facility. The standard for WS class is Phenolic compounds not greater than
I µg/1 (phenols) to protect water supplies from the taste and odor problems from chlorinated
phenols. Based on what the DEM Chem Lab says, STORET code#32730-phenols, the
method used recovers and tests for the following chlorinated phenols: o-chlorophenol,
p-chlorophenol, 2,4-dichlorophenol and 2,6-dichlorophenoL Other phenols may be present
in the sample but this method cannot distinguish them individually.
2) I applied the phenols limit at the outfall using 95 cfs (min. release from Mt. Island Lake
(80 cfs) plus estimated runoff(15 cfs) . However for this segment of the Catawba River, the
same flow of 95 cfs would also be applied at the Belmont intake, located approximately 3-4
miles downstream. (The only other flow that could be used in this portion of the Catawba
would be a min. average daily flow of 314 cfs. Using this flow, the phenols limit would be
52 ug/I @ 4.0 MGD or 46 ug/I @ 4.5 MGD. An updated runoff figure have not been
estimated.
Data shows that a phenols limit is needed especially with the Belmont intake downstream.
Even if we applied a limit using the min. average flow from the dam, Mt. Holly is still
averaging a phenols concentration (68 ug/1)higher than either of the projected limits.

Page 1
Note for Jackie Nowell
From: Carla Sanderson
Date: Mon, Apr 22, 1996 12:52 PM
Subject: RE: Mt Holly Phenol limit
To: Jackie Nowell
Cc: Ruth Swanek
OK- then it looks like Mt Holly should have the phenol limits calculated using the 30Q2
flow estimates(as was done for Sandoz). We can wait until Ruth returns tomorrow if you
think we still need to discuss this further.
From: Jackie Nowell on Mon, Apr 22, 1996 11:41 AM
Subject: RE: Mt. Holly Phenol limit
To: Carla Sanderson
Yes, max. predicted value of 450 µg/l with allowable concentrations of 117 ug/l'@ 4 and 104
ug/l @ 4.5. Actual phenols values of 150 µg/l, (twice), 140 µg/l and 110 µg/l reported in the
past year's data.
From: Carla Sanderson on Mon, Apr 22, 1996 11:28 AM
Subject: RE: Mt.Holly Phenol limit
To: Jackie Nowell
Does reasonable potential still show they need a limit?
From: Jackie Nowell on Mon, Apr 22, 1996 11:25 AM
Subject: RE: Mt Holly Phenol limit
To: Carla Sanderson; Ruth Swanek
We'll probably have to discuss this one some more. Another look at the flows in this
segment of the Catawba River and NCAC .0206 on flow design criteria for effluent
limitations, I had decided that if we didn't have a 30Q2 to apply for the phenols or phenolic
compounds limit, then we should use the minimum average flow release from the dam plus
runoff of 329 cfs. The reg says that the minimum instantaneous release should/could be
used for acute toxicity concerns. Since phenols isn't a toxic but an aesthetic standard then the
min. instantaneous flow may be too stringent.
BUT.... A look at the old Sandoz file, an industrial discharger located just upstream of Mt.
Holly. and I found that Sandoz had gotten a 30Q2 flow of 716 cfs at their discharge from the
USGS in 1993 and Ruth had applied this flow to calculate a total phenols limit for Sandoz.
Since there is only a DA difference of 4 mi2 between Sandoz and Mt. Holly , I would think
that I could use this same 30Q2 flow of 716 cfs to determine a new phenols limit for Mt.
Holly of 117 µg/1 @ 4 MGD or 103 µg/l @ 4.5 MGD.
What do you guys think?
From: Carla Sanderson on Mon, Apr 22, 1996 8:45 AM
Subject: FW: Mt. Holly Phenol limit
To: Jackie Nowell
What have you determined regarding the flow for this one? I would like to go ahead and
send the final WLA out as soon as possible.

Page 2
From: Ruth Swanek on Thu, Apr 18, 1996 4:21 PM
Subject: RE: Mt. Holly Phenol limit
To: Carla Sanderson;Jackie Nowell
Shouldn't we use minimum daily flow from dam?
From: Carla Sanderson on Thu, Apr 18, 1996 4:18 PM
Subject FW: Mt. Holly Phenol limit
To: Dave Goodrich;Jackie Nowell
Cc: Ruth Swanek
Since our standard is based on chlorinated phenols, I think Jackie's application here is
correct. When we met on this last September,I beleive we decided that we will limit
chlorinated phenols according to the state standard and monitor for T. phenol. I am sorry we
have not been writing this on the WLAs correctly.
Since the storet code is set and based on testing for chlorinated phenols, I am not sure we
should make the recommendation for chlorinated phenols,but we should probably add
monitoring for T.Phenol. Please let me know what your thoughts are on this and if we
should make the change to say chlorinated phenols in permits(are you already doing this-
per your GW remed and storage tank SOP -it looks like it).
From: Jackie Nowell on Thu, Apr 18, 1996 12:56 PM
Subject: Mt. Holly Phenol limit
To: Carla Sanderson;Dave Goodrich
In case, my scribbling on the factsheet is unreadable, my comment is as follows: 1) I would
continue to use the phenols parameter based on the STORET parameter code, already
monitored by the facility. The standard for WS class is Phenolic compounds not greater than
1 µg/l (phenols) to protect water supplies from the taste and odor problems from chlorinated
phenols. Based on what the DEM Chem Lab says, STORET code#32730-phenols, the
method used recovers and tests for the following chlorinated phenols: o-chlorophenol,
p-chlorophenol, 2,4 -dichlorophenol and 2,6 -dichlorophenol. Other phenols may be present
in the sample but this method cannot distinguish them individually.
2) I applied the phenols limit at the outfall using 95 cfs (min. release from Mt. Island Lake
(80 cfs) plus estimated runoff(15 cfs) . However for this segment of the Catawba River, the
same flow of 95 cfs would also be applied at the Belmont intake, located approximately 3-4
miles downstream. (The only other flow that could be used in this portion of the Catawba
would be a min. average daily flow of 314 cfs. Using this flow,the phenols limit would be
52 ug/l @ 4.0 MGD or 46 ug/1 @ 4.5 MGD. An updated runoff figure have not been
estimated.)
Data shows that a phenols limit is needed especially with the Belmont intake downstream.
Even if we applied a limit using the min. average flow from the dam,Mt. Holly is still
averaging a phenols concentration (68 ug/1)higher than either of the projected limits.

TOXICANT ANALYSIS
Facility Name iMt.Holly WWTP Parameter=:CR I Parameter= Cu .'i Aaramefor= Chlorlde
NPOES A nc0021156 Standard 50 A Standard ]: A Standard=' 250000 A
Ow MGD 4;
7Of0sds 95; n BDL=12DL Actual Data RESULTS nBDL=12DL Actual Data RESULTS nBDL=12DL Actual Dat RESULTS
fIVC % i 6.13 1 20 20 Std Dv. 2173320077 1 10<20 Std Dev. 16.16 1 68.98 80.98 Std Dev.
FecYin Stream iCalawba RNar 2 10<20 Mean 27.82608696 2 10<20 Mean 23.81 2 57.39 51.39 Mean
Stream Class!WS-IV CA 3 10<20 C.V. 0.781036803 3 10<20 C.V. 0.676 3 58.53 58.53 C.V.
4 40 40 4 30 30 4 53.55 B3.65
FINAL RESULTS 5 10<20 5 40 40 5 74.64 74.84
.._.._.._.._.. ......
CR 6 30 30 Mult Factor= 2.7i 6 10<20 Mutt Factor=� 2.4: 6 69.95 69.95 Mutt Fact"
Max.Prod Cw 216iu A 7 1 0<20 Max.Value BO I 10<20 Max.Value 70 A:E:%1 7 84.22 64.22 Max.Value
Allowable Cw 816.1ju B 30 30 Max.Pred Cm 216 8 20 20 Max.Pred Cw 168 A`i'; B 87.74 87.74 M.,Prod Cw.
Max,Value SO! 9 1 0<20 Allowable Cw 816.1 PgA 9 10<20 Allowable Cw 144.3 E21.?, 9 49.4 49.4 Allowable Cw
Cu 10 BO BO 10 30 30 10 51.08 51.08
Max.Pretl Cw 16B!u 11 20 20 11 20 20 11 56.1 56.1
Allowable Cw 174.3:u A 12 20 20 12 30 30 12 49.07 49.97
Max.Value 70: 13 50 50 13 30 30 13 65.06 65.06
Chlodtle 14 50 50 14 30 30 14 69.46 69.46
Max Pred Cw 114.D62:ugA 15 40 40 15 40 40 15 79.74 79.74
Allowable Cw 4080645.2ju A 16 50 50 16 40 40 16 78.34 78.34
Max.Value 87.70i 77 10 QO 17 70 70 17 74.35 74.35
Flumide i 19 10<20 1 18 10<20 18 84.26 84.26
Max.Pred Cw 6420ivaA 19 20 201 19 10<20 19 78.761 7878
Allowable Cw 29380.6!u A 201 20 20 20 20 20 20 82.76 62.76
Max.Value 2710! 21 80 BO 1 21 50 50 21 81.3 91.3
Cyanide ! 22 10<20 22 10<20 22 78.76 7B.76
Max.Pred Cw 26:u A 23 - 10<20 23 10<20 23 83.65 83.65
Allowable Cw Sl S!u A 24 24 24
Max.Value 20: 25 25 25
Phenol 26 26 26
Max Prod Cw 450:u A 27 27 27
Allowable Cw 16.3iu A 28 28 28
Max.Valve 150i 29 29 29
Cadmium1 30 30 30
Max.Prod Cw 2.6iu A 31 31 31
Allowable Cw 32.6!u A 32 1 32 32
Max.Value 2! 33 33 33
Pb 34 36 34
Max Pred Cw 51:u A 35 35 35
C 40B.Allowable w 1:u 4 36 36 36
Max.Value 30: 37 37 37
Nickel 38 38 3m
Max.Pred Cw 60ju A 39 39 38
Allowable Cw 40B.Yu A 40 40 40
Max.Value 301 41 41 41
Zn 42 42 42
Max.Pred Cw 472.6 A 43 43 43
Allowable Cw 816.11u u A 44 44 44
Max.Value 2780 45 45 45
All 46 46 46
Max.Fred Cw 3iu A 47 47 47
Allowable Cw 1.0iu A 46 48 48
Max.Value 2.5i 49 49 49
MBAS 50 50 50
Max.Pad Cwj 1520jugA 51 Ni1
Allowable Cw 8161.3iu A 52 52 52
Max.Value B00 53 1 531 53
51 64 54
3/1596 PAGE'

TOXICANT ANALYSIS
Flunoide anide Paarnafor= Phenol
Standard-
-2 SW Standard I uqA Standard 1800 VgA
n BOL.112DL Actual Data RESULTS —n 8DL=1/2DL Actual%DataRESULTS ff—n BDL-1/2DL Actual Dolan RESULTS
0
12.754315 1 830 830 Sid Dov. 425.M74 I 10�20 Sid Dow. 1 20 20 Sid Dev. 46.2123
2
< 0 Mean &
71.40304 2 740 740 Mean WS.21739 2 10�20 Mean IOA348 2 150 150 Mean 50.116I)s
< 0 CV
0.17116242 3 720 720 C.V. 0.4811595 3 10�20 C.V. 0.19983 3 150 150 C.V. 0.90845
0
-�X 4 820 820 4 10�20 4 10<20
5 930 930 5 20 20 5 50 50 7.
.......... . ............
0, 6 910 916 Mull—Factor- ------- 6 10<20 Mull Factor 1.3; 6 50 50 Mug Factor�1
............... ........
:i:::I:i::�-7—10<2 0 M. V. 7 90 90 Max.Value 160 jug/1 87.74 880 880.Mzo,.Value 2710 VgA 0 Max.Value -2OG
114.062 g9A B 800 800 Max.PredCw 5420 6 10<20 26 a 110 110 Max.Pred C% 450 ELA-1.
Max.Pred Cv
4080645.2 a 810 810 Allowable Cw 29380.6 9 10<20 Allowable Cw 81.6 W 2 9 30 30 lAllowable Cw 16.3
1 10 B50 850 10 10.20 10 10 QO
.... NN:
11 540 540 it 10<20 11 40 40
12 780 780 12 10<20 12 40 40
13 800 800 13 10<20 13 30 30
14 870 870 14 10<20 14 30 30
is 1380 1360 Is 10<20 5 10<20
16 2710 2710 16 10<20 16 140 140
17 840. 840 17 10<20 17 30 30
1s 690 6901 10 10<20 18 40 40
19 730 730 19 10<20 19 N SO
--i 20 650 650 20 10<20 11 20 10<20
27 700 700 21 10<20 21 30 3011
22 740 740 22 10<20 "",-22 10<20
23 660 660 23 10<20 23 10<20
L4 24 24 :::::]:j:
25 25 25
26 26 26
27 27 27
28 28 28
29 29 29
30 30 30
31 31 31
32 32 32
33 33 33
34 34 34
35 35 35
36 36 36
37 37 37
38 38 38
39 39 39
40 —z' 40 60
41 41 ..j:. 41
42 42 42
43 43 63
45 45 45
46 46 46
47 47 47
—— I
48 48 48
4B 49 49
so 50 so
51 x 61 61
52 52 2
53 ... 53 53
64
3115M PAGE:

TOXICANT ANALYSIS
ramefer. Cadmium ::IFafare1ef- Pb i'i':`Farameta,= Nickel :i:iRaramefer. Zn
Standard 2 Standard.! 25 A ii ii Standard= 25: :'4i 5fandard. 50i A
n BDL=12DL Actual Data RESULTS n BDL.l2DL Actual Data RESULTS n BDL.laDL Actual Data RESULTS n BDL-12DL Actual Data
1 2 2 Std Dev. 0.20851 1 10<20 SId Dev. 4.577 1 10<20 Sid Dev. 7.87752 1 120 120
2 1 <2 Mean 1.0tma 2 10<20 Mean 11.3 2 1 0<20 Mean 15.6522 2 69 69
3 1 <2 C.V. 0.16983 3_ 10<20 C.V. 0.405 3 1 0<20 C.V. 0.50329 3 86 68
4 1 <2 d 10<20 4 1 0<20 4 141 141
5 1 <2 5 10<20 5 1 0<20 ": 5 170 170
6 1 <2 Mult Facfor.! 1.3 6 20 20 MUA Factor +7 6 20 20 Muk Factor.° 2i 6 225 225
.._.._.._. _.._.._ ._.._.._.. .,r
] 1 <2 Max.Value 2 7 10<20 Max.Value 30 4i; 7 1 0<20 Max.Value 30 A:S: 7 178 178
B 1 <2 Max.Pretl C 2.6 A:i! 8 10<20 Max.Pred Cw 51 4id?3!i 8 10<20 Max.Protl 60 A:?iC B 136 736
9 1 <2 Allowable Cw 32.6 A::': 9 30 30 Mlowabb Cw dOBd A:£ i 9 10<20 Allowable Cw 408.1 9 175 175
101 1 <2 10 10<20 10 30 30 10 274 274
11 1 <2 71 10<20 11 10<20 11 242 242
12 1 <2 12 10<20 12 10<20 12 142 142
13 1 <2 13 10<20 13 20 20 13 222 222
74 1 <2 Z id 10<20 14 30 30 14 227 227
15 1 <2 15 10<20 15 20 20 15 233 233
16 1 <2 Xztfi 10<20 16 30 30 76 102 192
n 1 <z n 10<zo n 10<zo 17 ill ill
18 1 <2 1 1 18 10<20 16 10.20 16 137 137
19 1 <2 19 10<20 19 10<20 19 113 113
20 1 <2 20 10<20 20 20 20 20 13B 138
211 1 <2 21 10<20 21 30 30 21 278 278
22 1 <2 22 10<20 22 20 p 22 81 81
23 1 <2 23 10<20 23 10<20 23 52 52
24 24 24 24
25 25 25 25
26 26 26 26
27 27 27 27
28 28 28 2B
29 29 29 29
30 30 30 30
31 31 31 31
32, 32 32 32
33 33 33 33
34 34 34 34
35 35 35 35
36 36 36 36
37 37 37 37
38 38 36 38
39 39 39 39
40 40 40 40
41 47 41 41
42 42 42 42
43, 43 43 43
14 44 _ 44 44
45 45 45 45
46 46 46 46
07 47 47 47
48 49 da 4B
48 49 1069 49
50 50 50 50
51 51 51 51
52 52 52 52
53 53 53 53
u s4 sa 54
3115A96 PAGE:

TOXICANT ANALYSIS
_Parannoterm A2 :I:.Pamnnstsr- MBAS
is Standard— 0.06 vQA Standard. ......._500 ugA
RESULTS �.x n BDL=1/2DL Actual Data RESULTS n BDL=i/2DL Actual Data RESULTS
1 2.5 5 Sid Day. 0.2562 11 2150 280 Wd �. 194.011
Sid Dev. 9755 35
_2_25 2.2815 �F2-600 600 Mae 435 3
Mean 62783 �S Mean
C.V. 0.39915 �i
3 2.5 <s C.N. 0.11m 3 So '100 C.V. G."54
So
4 2.5 '5 4 4100 4W
5 2.5 �s 5 240 240
...........
Mutt Factor i3i �x':' 6 2.5 1.2 6 680�5 Mull Factor 680 Mutt Favor-: 1.9
ugAMax.Value 7 2.5, �5 Max.Maut.Value 7 520 520 Max.Value 800
Max.Prod C 472.6 2.5 �5 Max.M .Prod Cm 3 8 "0 440 Max.Pred C 1520 _2A
Allowable Cw 816.1 HRAJ::;o 9 2.5 <5 Allowable Cw 1.0 EEL 9 520 5201 Allowable Cw 8161.3 E2_A2-,.
10 2 <4 10 320 320
11 2 <4 11 240 240
12 2 <a 12 400 400
13 2 c4 Q APID "o
14 2 <4 �x
14 680 690
15 2 <4 is B00 600
16 2 <d1[ 16 360 W
17 17
18 18
19 19
20 20
21 21
22 22
2 23 3
24 24
25 25
26 26
27 27
28 2
30 30
31 34
32 32
34 34
35 35
':x:
37 37
38 38
39 39
40 40
41 41
42 42
4 43 3
45 45
- ----------46
46
47 4
48 48
49 49
S SO O
52 521
63 53
54 -54
1 1
3115M PAGE,

TOXICANT ANALYSIS
Facility Name Mt. Hol WWTP
NPDES# nc0021156
Qw MGD _W 4.5i
7Q 10s (cfs) 95'
/WC(%) 6.84i
Rec'ving Stream Catawba River
Stream Class WS-IV CA
FINAL RESULTS
CR
Max. Pred Cw 216'u A
Allowable Cw 731.0':ugA
Max. Value 801
Cu
Max. Pred Cw 168':ugA
Allowable Cw 102.3 ugA
Max. Value 70i
Chloride
Max. Pred Cw 114.062':ugA
Allowable Cw 3655017.9iugA
Max. Value 87.74
Fluroide
Max. Pred Cw 5420!ugA
Allowable Cw 26316.1 i ugA
Max. Value 2710
Cyanide
Max. Pred Cw 26iugA
Allowable Cw 73.1;ug/l
Max. Value 20'
Phenol
Max. Pred Cw 450iu A
Allowable Cw 14.6ugA
Max. Value 150'
Cadmium
Max. Pred Cw 2.6;ugA
Allowable Cw 29.2'ugA
Max. Value 2':
Pb
Max. Pred Cw 51ugA
Allowable Cw 365.5'ugA
Max. Value 30!
Nickel
Max. Pred Cw 601ugA
Allowable Cw 365.5iugA
Max. Value 30i
Zn
Max. Pred Cw 472.61u9A
Allowable Cw 731.0'ugA
Max. Value 278!
Ag
Max. Pred Cw TugA
Allowable Cw 0.9iugA
Max. Value 2.5'
3/7/96 PAGE 1

TOXICANT ANALYSIS
MBAS
Max. Pred Cw 1520;ug/I
Allowable Cw 7310.Oiu /I
Max. Value 800
i
377/96 PAGE

On
/IS O, ZS° 0,6°d <o,/00 LZ27, GSo
C O.ol 0,07- /r
Q Go.oa c0 L9r— UVS
I r✓f4JfC�
pool
a oulG � 0.60p y G . /
i
G O.ao Ld, 00S I/
L � G o,°o5 G o.wi
—
M89s fLo yy° su .3Z° �yo Yyo yo o .6gu
r
Ob GItlL o „ „ n rr
puuZ
T/7i14
� d n
n

Mt. Holly WWTP
UPSTREAM DOWNSTREAM
MONTH Temp DO Saturation Fecal Conductivity Temp DO Saturation Fecal Conductivity
Aug-95 31 6.6 89% 31 68.6 31 7.2 97% 34 90
Jul-95 30 6.6 87% 62.3 61.7 30 7.1 94% 63.5 81.8
Jun-95 26 7.7 95% 86.8 56.1 26 7.3 90% 85 59.6
May-95 23 7.6 89% 247 59.6 23 7.5 87% 239.5 75.8
Apr-95 20 8.5 94% 20 66.4 19 8.8 95% 9.8 80.2
Oct-94 20 8.3 91% 41.3 61.4 19 8.5 92% 30.3 73.9
Sep-94 26 7.2 89% 21.4 62.8 26 7.8 96% 20.13 74
Aug-94 29 7 91% 28.3 58.6 29 7.3 95% 19.6 72.9
Jul-94 29 6.5 85% 52.7 72.8 29 7.5 98% 38.8 89.5
Jun-94 27 6.8 85% 94.8 67 28- 7.6 97% 49.3 104.6
May-94 22 7.9 90% 25.2 72.4 23 7.8 91% 11.3 99.9
Apr-94 19 1 9.1 1 98% 1 138.3 1 76.5 1 1 19 1 9.2 1 99% 38.3 1 74.9
Notes ups-Hwy 27 Bridge
dwn-Hwy 29 &74 Bridge
NCO021156 3/6/96

Mt. Holly WWTP
Residual Chlorine Ammonia as NH3
(summer)
7Q10(CFS) 95 7010(CFS) 95
DESIGN FLOW(MGD) 4.5 DESIGN FLOW(MGD) 4.5
DESIGN FLOW(CFS) 6.975 DESIGN FLOW(CFS) 6.975
STREAM STD(UG/L) 17.0 STREAM STD(MG/L) 1.0
UPS BACKGROUND LEVEL(UG/L) 0 UPS BACKGROUND LEVEL(MG/L) 0.22
IWC (%) 6.84 IWC (%) 6.84
Allowable Concentration(ugA) 248.54 Allowable Concentration (mg/I) 11.62
Ammonia as NH3
(winter)
7Q10(CFS) 95
Fecal Limit 200/100ml DESIGN FLOW(MGD) 4.5
Ratio of 13.6.1 DESIGN FLOW(CFS) 6.975
STREAM STD(MG/L) 1.8
UPS BACKGROUND LEVEL(MG/L) 0.22
IWC(%) 6.84
Allowable Concentration(rri 23.32
NC0021156 3/5/96

Page 1
Note for Jackie Nowell
From: Mike Blasberg
Date: Tue, Mar 5, 1996 4:19 PM
Subject: Stanley/Mt Holly
To: Jackie Nowell
In talking with Gary Parker, Stanley's Town Manager, I found out that the sewer extension
would not be completed until probably Dec 1997 fi it indeed passes the Town Council. I
didn't know if this would have any effect on the NPDES permit you issue to Mt Holly (at
least as far as the monitoring requirements). If you already knew this please disregard.
Thanks
Mike

Page 1
Note for Jackie Nowell
From: Steve Bevington
Date: Fri, Mar 1, 1996 4:52 PM
Subject: RE: MT. HOLLY WWTP
To: Jackie Nowell
I'm sorry that we did not come and get you when we had an informal (Oh, by the way ...)
meeting on the subject,I'll try to do that next time. Let's go and find Susan and Dave
sometime soon to finish our discussion. All we have talked about so far is whether Mt Holly
should get new nitrogen limits if they simply re-rate their plant AND take on Stanly. I think
we agreed that they would not need nutrient limits for that. Lets discuss BOD and then meet
quickly with Dave and Susan. Thanks.
From: Jackie Nowell on Fri, Mar 1, 1996 10:25 AM
Subject: MT. HOLLY WWTP
To: Steve Bevington
I'M WORKING ON THE WLA AND I KNOW THAT YOU, DAVE, AND SUSAN HAVE
DISCUSSED HOW TO HANDLE THIS EXPANSION THRU RERATING THE PLANT.
INCREASE FROM 4 MGD TO 4.5 MGD. SHOULD THE FACILITY RECEIVE
NUTRIENT LIMITS PER THE LAKE WYLIE STRATEGY? SHOULD THEY RECEIVE
ADVANCED SECONDARY OR BPJ LIMITS BECAUSE OF DIRECT DISCHARGE TO
CATAWBA RIVER? I UNDERSTAND THAT STANLEY IS CONSIDERING TYING
ON TO MT. HOLLY AND WE DONT WANT TO DISCOURAGE REGIONALIZATION.
SO...SHOULD I JUST HOLD THIS UNTIL FURTHER DISCUSSION AND INFO IS
PROVIDED? LET ME KNOW.
FYI. MY REVIEW OF MT. HOLLY'S DATA INDICATES THAT THE PLANT IS
EXTREMELY WELL OPERATED,MANY OF THE MONITORING REQUIREMENTS
FOR METALS MAY BE DROPPED BASED ON THE EFFLUENT DATA, MANY
INSTANCES OF PARAMETERS BELOW DETECTION LEVEL FOR THE PAST TWO
YEARS.. NOT SURE HOW TAKING ON STANLEY'S WASTEWATER WOULD
AFFECT THIS TREATMENT.
ALSO,WE WROTE THEM A SPEC LETTER IN FEB '94 WHEN THEY ASKED
ABOUT A 6 MGD EXPANSION, AND TOLD THEM THEY WOULD RECEIVE BPJ
LIMITS AND TP=0.5 AND TN=4 & 8.

TOXICANT ANALYSIS
Facility Name Mt. Holly WWTP
NPDES# nc0021156
Ow MGD 4i
7010s (cfs) 951
IWC(%) 6.13i
Rec'ving Stream Catawba River i
Stream Class WS-1V CA
?3 FINAL RESULTS
CR
Max. Pred Cw 2161ugA
Allowable Cw 816.1':ugA
Max. Value 80i
,23 cu Jo ZSdDL
Max. Pred Cw, 168':ugA
Allowable Cw 114.3ugA Mw l♦,
Max. Value 701
�3 Chloride
Max. Pred Cw 114.062':ug/l Z
Allowable Cw 4080645.2iugA �}P
Max. Value 87.74
23 Fluroide
Max. Pred Cw 5420ugA ��,.f '
Allowable Cw 29380.6i ugA W�Y T w '
Max. Value 2710 1� ✓�
2; Cyanide J1
Max. Pred Cw 26Wg/l
Allowable Cw 81.6iugA �/ �
Max. Value 20•.
�3 Phenol y Z 3 A DL
Max. Pred Cw 450iu /l u
Allowable Cw 16.3 ug/l
Max. Value 150':
�3 Cadmium ZZ ( L3 1301—
Max. Pred Cw 2.61ugA U
Allowable Cw 32.61ug/l oly
Max.Value 2'; `
a3 Pb i ZI z3 13t)L
Max. Pred Cw 51 ugA
Allowable Cw 408.1'ugA
Max.Value 30;
;3 Nickel Jy 23 ROLL
Max. Pred Cw 601ug/1
Allowable Cw 408.1 j ugA
Max. Value 30;
23 Zn
Max. Pred Cw 472.6iugA
Allowable Cw 816.11 ugA
Max. Value 278i
J b Ag f}�t lid
Max. Pred Cwi 3':ug/l
Allowable Cw 1.OiugA Q �
Max. Value 2.5'
2/29/96 PAGE 1

TOXICANT ANALYSIS
I� MBAS
Max. Pred Cw 1520;ug/I ➢/W�
Allowable CNN 8161.3iu /I
Max.Value 800
n
2/29/96 PAGE

MOUNT HOLLY WWTP JMN
CATAWBA RIVER WS-IV CA 2/28/96
030833
Facility requesting renewal of existing NPDES permit with modification for expansion
from 4.0 MGD to 4.5 MGD, this expansion will be from a rerating of the plant (no
construction/no public monies/no EA). Per P&E, the Town of Stanley is considering
connecting to Mt. Holly and discontinuing the discharge to Mauney Creek. A concern is
also whether nutrient limits should be given to Mt. Holly based on the revised 1995 Lake
Wylie Management Strategy. The increase in flow by 0.500 MGD would categorize it as
an expanding discharge and subject it to limits of 1 mg/1 TP and 6 mg/1 TN (summer only).
There is a reluctance to give nutrient limits and discourage regionalization of facilities.
Mt. Holly appears to be a well operated plant, in the past three years,there was only 1
permit exceedance for TSS. The toxicity analyses showed that several parameters could be
dropped from the NPDES permit and monitoring continued in the pretreatment LTMP.
Telecon w/ Mike Blasberg - said that Mt. Holly's current LTMP contains quarterly
monitoring for: As, Cd, Cr, Cu, Cn, Pb, Hg, Ni, Se, Ag, and Zn. Also have monitoring
for BOD, MBAS, Molybdenum, NH3, and Phenols. Indicated that if Stanley, tied on to
Mt. Holly that would be an excellent move. The Stanley plant is not well operated, they are
understaffed, pretreatment program is a shambles. Recommend a tie-on to Mt. Holly and
possibly have Mt. Holly monitor monthly for a year or two until the effects of the addition
of Stanley's wastewater is seen for a while.
Telecon with Samar B. of MRO- Asked him if the engineering report justifying the
plant capability for additional flow had been received by his office yet. He said they had not
received it and it should be reviewed in the Central Office for completeness and accuracy.
He does not recommend approval of the expansion until the report has been reviewed.
Concerning the connection of the Stanley wastewater, he said that they were working
toward that goal but he didn't know how it was progressing.
Recommendation:
@ 4.0 MGD, recommend renewal of existing oxygen consuming limits.
For metals, recommend that Cr. Chloride, Cn. Cd, Pb. Ni. Ag, and MBAS
monitoring be dropped from NPDES permit and monitored in Pretreatment
LTMP. Need limit for Phenols = 16 ug/l, continue monitoring for copper
and zinc.
@ 4.5 MGD, recommend renewal of existing BODS limits of 30 mg/l..
Recommend that summer/winter NH3 tox limits of 11 and 23 me/l,
respectively be added. Do not recommend that nutrient limits for TP and
IN be added for this expansion of flow by rerating of the plant. For
metals, recommend that Cr. Chloride, Co. Cd, Pb. Ni. Ag, and MBAS
monitoring be dropped from NPDES permit and monitored in Pretreatment
LTMP. Need limit for Phenols = 16 ug/l, continue monitoring for copper
and zinc.

ee
WIAH-11 11IFFLUENI-loxio I Y I ESTING 01SELF-MON1 I ORINGSUMMAkY I hi.I'd, Ill. PPR,
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7QJ0 I VW ]W(('A)X 1)(. 96
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7Q10 11'9 IWE"A.).1 l 0 Oak': 96
NII. (;ilr.d W%A 11. PIkm('Ilk 1.1m'WA:117 RH 01'14) T.E.ON:.("[lit HKI 1 02 -- --- --- --- --- --- --- ...
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7Q10 00 WCPA) NOX) 11"1" 96
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N(W07211ANJI B,a(7/1191 Q I'll; A 10,A,Au,Ni. N .......NINGIJ; 93 ... ... Pass --- I'lls' --- ... P,s, ...
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0

Murcia V(Ullen
SOC PRIORITY PROJECT: Yes—No X
If Yes , SOC No .
To : Permits and Engineering Unit
Water Quality Section
Attention: Susan Wilson
Date: February 27 , 1996
NPDES STAFF REPORT AND RECOMMENDATION
County: Gaston
Permit No. NC0021156
PART I - GENERAL INFORMATION
1 . Facility and Address : Mt Holly WWTP
City of Mount Holly
P.O. Box 406
Mount Holly, N.C. 28120
2 . Date of Investigation: February 20, 1996
3 . Report Prepared By: Samar Sou-Ghazale, Env. Engineer I
4 . Persons Contacted and Telephone Number: Jeff Fritz, ( 704 ) 827-
4261 .
5 . Directions to Site : From the junction of Highway 273 and
Tuckaseegee Road in Mount Holly, travel southeast on
Tuckaseegee Road approximately 0 .55 mile to the junction with
Broome Street. Turn left (east) and proceed on Broome Street
approximately 0 . 2 mile to the entrance of the treatment plant.
6 . Discharge Point( s ) . List for all discharge points :
Latitude: 35015155" Longitude: 81000' 35"
Attach ;=U.S .G.S . map extract and indicate treatment facility
site and' discharge point on map.
U.S.G. S . Quad No. : F 14 SE U.S .G.S. Name: Mount Holly, N.C:
7 . Site size and expansion are consistent with application?
Yes No If No, explain:
8 . Topography (relationship to flood plain included) : Slopes
range from 2 to 6% . The site is not located in a flood plain..
9 . Location of nearest dwelling: No dwellings within 500 feet of
the wastewater treatment plant .

I
10 . Receiving stream or affected surface waters : LCatawba River
a . Classification: WS-IV CA — {
b. River Basin and Subbasin No. : Catawba; , 03-08-33i I
C . Describe receiving stream features and pertinent
downstream uses : The receiving stream is the Catawba
River which contains a good flow at all times . The City.'
of Belmont water supply intake is located downstream just
below where Highway 74 crosses the Catawba River.. The
river is also used for primary and secondary recreational
activities .
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1 . a. Volume of wastewater to be permitted: 4 . 5 MGD (Ultimate
Design Capacity)
b. What is the current permitted capacity of the wastewater
treatment facility? . 4 . 0 MGD
C. Actual treatment capacity of the current facility
(current design capacity) ? 4 . 0 MGD
d. Date(s ) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years : An Authorization to construct was issued on
February 6 , 1995 for the addition of two 750, 000 gallon.
sludge holding tanks and a polymer feed system.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities : The
existing activated sludge wastewater treatment facilities -,
consists of manually cleaned influent bar screen, dual
grit chambers , instrumental flow measurement, a flow
equalization basin, Three ( 3) aeration basins with
mechanical aeration, dual secondary clarifiers , dual
chlorine contact chambers, dual aerated sludge holding
tanks ,, dual sludge holding tanks ( formally clarifiers
')that have been replaced) and dual sand drying beds (not
in use) .
"f..' # Please provide a description of proposed• wastewater
" treatment facilities : The proposed addition, will
consists of two 750,000 gallon sludge holding tanks and
a polymer feed system.
g. Possible toxic impacts to surface waters : Toxic impacts
could be caused by Cd, Cr, Cu, Ni , Pb, Zn, CN, Ag, and Hg
which are known to be present in the wastewater.
h. Pretreatment Program (POTWs only) : Approved
2 . Residuals handling and utilization/disposal scheme:

a) If land applied, please specify DEM Permit No.
WQ0001863 .
Residuals Contractor: Bio-Nomic Services, Inc.
Telephone No. 704-529-0000
b) Residuals Stabilization: FTwo sludge holding tanks and a
polymer feed system will be completed in June of 1996..
Upon construction, the facility will be able to meet the
requirements of the part 503 sludge regulations for Class
B sludge.'
h
3 . Treatment plant classification (attach - completed rating
sheet) : 'Class III (the construction of the proposed
facilities will not change the present classification)..
4 . SIC Code( s) : 4952
Wastewater Code(s) of actual wastewater, not particular
facilities, i .e. , non-contact cooling water discharge from a
metal plating company would be 14 , not 56 .
Primary: 01 Secondary:
Main Treatment Unit Code: 02003
PART III - OTHER PERTINENT INFORMATION
1 . Is this facility being constructed with Construction Grant
Funds or are any public monies involved (municipals only) ?
N/A
2 . Special monitoring or limitations ( including toxicity)
requests : N/A
3 . Important SOC, JOC or Compliance Schedule dates : (please
indicate) N/A
4 . Alternative Analysis Evaluation: Has the facility evaluated
all of the non-discharge options available. Please provide
regional perspective for each option, evaluated. N/A
S . Air Quality and/or Groundwater concerns or hazardous materials
• utilized at this facility that may. impact water quality, air
quality, or groundwater: No AQ or 133W concerns nor are
hazardous materials utilized at this facility.
PART IV - EVALUATION AND RECOMMENDATIONS
Mid City of Mount Holly is applying for renewal of the permit
and_for the expansion of the permitted flow from 4 to 4 .5 MGD. . No'
additional construction is planned, however according to Jeff
Fritz , with the City of Mount Holly, the existing facility will be)
;capable of handling the additional- flow. `, Mr. Fritz was informed
(that_ an- Engineering-report must be submitted to justify the plant

,capability for additional flow prior to obtaining a flow
modification
A review of the past year' s self-monitoring data, from 11/94
through 11/95, did not show any monthly monitoring violations .
Pending receipt and approval of the Waste Load Allocation and
review and approval by P&E, it is recommended ,that the NPDES Permit
for this facility be reissued. ,
Signature of Roort Preparer
Water Quality"/Regional Supervisor
Date
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